Wrench



WRENCH lApril 23, 1929.`

med Jan. 1s. 1928 v Patented Apr. 23, 19219. l K p uivi'rizn STATESCHARLES w.

PAT'ENT oFFjicE,

LYNCH, on'rnnny, OKLAHOMA, AssIGNoR To WILLIAMS mon WoRKs COMPANY,iNooRPoRATED, or ToiviAwA,yoxLAHoMA.

WRENCH.

Application filed-January 13, 71928; Serial No. 246,611.

socket, the threads of each being partially imperfect so that whenFinally screwed home there is great frictionalresistance againstunseiewing. of the Joint. Great poweris therefore required inliiiallyscrewing up a joint, bucking up as called, or in the initial abreakingout of ajoint preliminary-to unscrewing the members.

One of the objects of this invention, 'therefore, is to provide a wrenchhaving a loose or oscillating handle which may be swung in an are togain momentum and then brought.

with great foi'ce against the wrench head to assist in bucking up-orbreaking outa joint, or for that matter any threaded connection. Theconnection betweenV the wrench head and handle is of suc-li nature withthe new and improved construction of this inven-l tion, that practicallythe entire reaction of the blow shall be absorbed by the heavy Yhead andnot imposed on pivot pins or like -relatively fragile parts. l i y Afurther objecto the invention is to produce a wrench of the characterabove-outlined which'is provided wit-h means whereby the head and handlemaybe readily iiitferloclred when desired, so that the parts vshall constitute a rigid wrench. This is particularly desirable when aconnectionis being ,spun in?,9

. oi' spun out, at which time the frictioiial resistance is not great,andl the operator in his manipulation of two wrenches, oneabove and onebelow the joint, swings the wrenches in a complete circle,changing handson each wrench after each half circle, it being evident that if thehandles were loose on the heads, this operation would be greatlyimpeded,

Another object of the invent-ion is to provide a wrench having a slidingextension sleeve or handle whereby the length of the lever arm may bereadily varied at will according to the resistance to be overcome.

A. still furtherobject of the invention is to produce an improved wrenchhead or jaw Vof the type designed for engagement with a particularshape, that will not fall from engagement withv the object to be grippedshould the handle be released by the operator. This construction isvespecially advantageous for sucker rod use as should .theoperator misshis grab or changing of hands -iii a spinning, operation, the wrenchwillnot fall from the sucker rod to the floor of the derricln Vfitli thegeneral objects namedy in view,

` the' invention consists in certain novel and useful features ofoiganization and combinations of parts vas hereinafter described `andclaimed; `and in order that it may be fully understood, reference is tobe had to the accompanying drawing, in which 1-1 Y v Figure l is anelevation of a wrench embodying' all of the features of invention, said'n wrenchbeing illustrated with thehandle and` headin vinterlockingposition.

F igure 2 vis a longitudinal section through the sleeve ofthe wrenchhandle,.tlie vhandle being `shown in dotted lines in its extendedposition with they wrench head and handle loose for imparting blows tothe'head.

.. Figure 3 is lan elevation vof the end of the wrench head.

\ Figure 4 4is a section on the line IVHIV ofFigure l. y y y Figure 5 isa sectiontliroiigh the handle to illustrate the rearend of tliewedgewhich` interlocks thehandle and head. Y Y

`Figure 6 is `a section onthe line VI-Vl of Figure 2. l f

In the said drawings, where like reference characters indicatecorresponding parts in allA of theipigures, lindicates a wrcnchvheadAformed with an operating Qto provide a gripping space, which willsnugly en'l'brace the object to beturiied which is indicated al A as alsucker rod.square. Inoi'der to pron viden'iean's which will operate to.hold theV Y wrench on the rod should the handle bereleased .bytl'ie'operator, a aw 3 is formed on said v'wrench head inoppositiongtofthe awI 2, and aspacejB is provided between said jawswhereby the wrench can be engaged with-the rod A as will be readilyunderstood. It will be apparent' that when along vsuclfrer rod isengaged by the wrench, if the wrench is re-y leased by the operator, theend of the handle will swing inan are. until the auxiliary jaw 3contacts with the rod A on the side opposite from jaw 2. rlhe wrenchwill thus maintain its engagement with the rod, but at a downward-lyextending angle therefrom. The aw Shas a further function in connectionwith the other features of the invention as will hereinafter appear.

Adjacent aw 2 the wrench head is formed with a semi-circular pocket iwithin-which the rounded ene or head 5 of a handle 6, comprising an'lf-shaped member having a web 7 and flanges 8, is adapted to oscillate,it being noted in this connection that the flange 8 adjacent the aws ofthe wrench merge into the are of the circular head 5. In theconstruction illustrated the handle 6isA held tightly for oscillationwith a bearing contact against the socket, by a. slip V9 bolted as at 10or otherwise secured with the socket of the wrench head. `The roundedhead 5 thus has a tight bearing contact with the pocket Ll against theentry of abrasive mattei' and the handle can be swung in an arc and itsflange 8 'forn'iing a hammer can be brought with great force against thestraight portion of the wrench head, constituting an anvil, to impartheavy hammer-like blows to unscrew or screw up rod A.

To provide means for readily interlocking the handle and the head toprovide a fixedhandle wrench when desired, the end of the handle 6 isreceived within a slidable sleeve 10, preferably corrugated torconvenience of the operator, said sleeve being provided with acontrolling rod 11 forwardly projecting from the handle and havingadjusting nuts 11L `for taking up wear. The rod 11 is engaged at itsopposite end with a sliding wedge 13 provided with side ears 14encircling the flange 8, it being evident that by moving the sleevetoward the head, the wedge may be slid in between the face of the slip 9and 'the back ofthe handle 6, thus resulting in produc-- ing afixed-handle wrench. Y

To hold the sleeve 1()EL in any desired posi tion of adjustment, aseries of lugs 14a are cast on one side of .theweb 7 adjacent the flange8, said lugs being notched as at 15 to provide ior unirnpeded slidingaction of the ears 14l of the wedge 13. Mounted between said web 7 andthe sleeve 10n is a s i'in0'acti'lated locking bolt 16 workin g throughan opening in the side of the sleeve and having a thumb-op eraled member17 working 1n a slot 18 1n the sleeve, whereby the bolt 16 may beengaged or disengaged between any pair of'lugs 11i and the sleeveconsequently fixed in any desirable position of extension.

'lhe sleeve is held against accidental dislodgment from the handle 6 bya locking bar 19 secured by a machine screw E20 engaged in the handle 6,said bar contracting with 'the locking bolt 16 ii the sleeve is extendedbeyond a certain point. It will be-noted inthis connection that theflange 8 is omitted from the handle 6 on one side of the web 7 so thatthe locking bolt 'may be free to loperate as above-described. Y f

Although the use or' the various parts is believed to be clearlyapparent from the above description, it is desired to point out that inoperation, .when ythe worker desires to shift from a loose-handle wrenchto a fixed-handle wrench, he merely retracts the bolt 16 with his thumband then pushes the sleeve inwardly. In this operation it is apparentthat the rod A will be disengaged from jaw 2 but will be immediatelyengaged with jaw 3, continued pressure by Vthe operator on the sleeveefifects entry of the wedge between the back of the handle 6 and theslip 9 as pointed' out, and eil'ectnally provid-esl a fixed-handlewrench.

It is believedthe construction and operation of the wrench has been' soset out that further recapitulation is unnecessary, and it is to beunderstood, that while I have described and illustrated the preferredembodiment of the invention, I reserve the right to make all changesproperly ialling' withinthe spirit and scope of vthe appended claims.

1. A wrench head, a handle having one end oscillatably secured thereto,and means slidable on said handle for preventing oscillation thereof,said wrench head and handlevhaving cooperating hammer and anvilsurfaces'.

2. A wrench head, a handle having one end oscillatahly'secured thereto,means 'or preventing oscillation of the handle in the head, andaslidable sleeve on the handle for op eration of said means. Y

3.k A wrench headhaving a socket, an oscillatory handle having a headfor bearing contact with said socket, means to retain the handle withinsaid socket, and manually operable means :for insertion between onesident the handle and one wallof the socketto prevent oscillation of thehandle.

Il. In a wrench, a wrench headhaving a socket formed witha curvedbottom, a handle formed with an enlarged head in bearing contact withthe curved bottom of said socket, and a securing slip carried by saidwrench handle and in contact with theenlarged head of' the handle toretain the handle in operative relation to the wrench head. Y l

In testimony whereof I afiiX my signature.

CHARLES TVV. LYNCH'. y

